E450 V10?

Desert Captain wrote:

Jerseydevil wrote:
06' just hit 33,000. Sat all winter, oil changed a few weeks ago. Noticed a ping, chirp, sound, etc? from engine while on recent trip. All gauges were good and ran strong. Put some 93 octane in. Will see what happens.

Nothing. Adding 93 octane won't do a thing except cost you extra money.

Not true if it is a pre-ignition ping.

I always run premium in my 4.6L E150 when going through the Smokey mountains, towing or not.

Ivylog wrote:
Was the sound while accelerating only? If so adding 93 should solve the problem as the gas today has a bunch of stuff that degrades after sitting that long. If all the time then the above by MichF and using a hose to your ear may help find the location.

My thoughts also. Noticed mostly accelerating or up incline road way. Very faint sound. Hopefully 93 will blow old gas out of system. Will also check belts, pulleys. Etc.

A rythmic chirp is usually the serpentine belt tensioner. Sometimes a little lithium spray on the spring is all it needs. They can chirp a Lon time before going bad.

Pinging will be intermittent, and worst under high load, low RPM like starting to climb a hill before it downshifts. #1 cause of pinging in the v10 is a dirty MAF sensor, which gets dirty because tensor filter isn't seated properly or the gasket is crushed. Or you're running a K & N filter

If it's really detonating/pinging, the 93 should help. If not you could have problems with a sticking EGR valve or sensor issue.
But it's probably just old gas. It may take a tank or two to work it out.

Was the sound while accelerating only? If so adding 93 should solve the problem as the gas today has a bunch of stuff that degrades after sitting that long. If all the time then the above by MichF and using a hose to your ear may help find the location.

Mich F wrote:
Ping, Chirp sound ? Could it be the serpentine belt, or a pulley ?

that's my first thought after sitting. Not a Ford fan but it is a strong engine.

Ping, Chirp sound ? Could it be the serpentine belt, or a pulley ?

Jerseydevil wrote:
06' just hit 33,000. Sat all winter, oil changed a few weeks ago. Noticed a ping, chirp, sound, etc? from engine while on recent trip. All gauges were good and ran strong. Put some 93 octane in. Will see what happens.

Nothing. Adding 93 octane won't do a thing except cost you extra money.

:S

Could be an exhaust manifold leak. Check the exhaust manifold for broken studs on rear passenger side.